Abstract: In order to identify the flesh texture and genotype of peach cultivar Xiacui， fruits of Yinhualu， Hujingmilu， Babygold 6， Yumyeong and Xiacui were harvested in eighth maturity. The ethylene production and flesh firmness were measured during storage. The results showed that fruit ethylene production of Yinhualu， Hujingmilu and Babygold 6 appeared a trend increased firstly and decreased afterwards with significant peaks， the flesh firmness of them decreased over time， and were lower than 10 kg·cm-2 in Yinhualu and Hujingmilu at the end of storage. While only a little amount of ethylene production was detected after harvest in Yumyeong and Xiacui， and the treatment of endogenous ethylene failed to induce a rapid loss in flesh firmness of the latter， it could retain more than 35 kg·cm-2 in the last period of storage. All these proved that the flesh texture of Xiacui is Stonyhard.

Key words: peach, fleshy texture, genotype, ethylene